<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Demo</title>
    <style>
        .border {
            position: absolute;
            width: 500px;
            height: 300px;
            border-radius: 10px;
            border: 5px solid #bb7171;
            margin: 50px;
            box-shadow: 0 0 0 10px #d18787,
                0 0 0 20px red,
                0 0 0 30px blue,
                0 0 0 40px yellow,
                0 0 0 50px green;
        }
    </style>
</head>

<body>
    <div class="border"></div>
</body>

</html>